Pietro Ungarello di Marco de' Natali, better known as Petrus de Natalibus ( 1400 1406), was an Italian bishop and the author of a collection of lives of the saints.
A Venetian, he consecrated himself to the ecclesiastical state, becoming a canon in Equilio (Jesolo). On 5 July 1370, he was elevated to the episcopal see of that city. Details are lacking regarding his pastoral activity.[1] The last mention of him refers to the year 1400, and in 1406, another appears as Bishop of Equilio; the date of his decease, therefore, must be set between these two years[2]
He is chiefly known as the author of Legends of the Saints in twelve books, a work with a wide circulation. In his arrangement of the various lives he follows the calendar of the Church.[1] The collection, first printed in Vicenza, 1493, went through many editions, the last of which (the eighth) appeared in Venice, 1616.[3]